Headsets, Inc. produces headsets for gamers. The standard rate for labor is $20 per hour and each headset takes 1/2 hour. For the most recent month, the company produced 10,000 headsets and paid its direct labor force $22 per hour. The actual time spent to produce the 10,000 headsets was .6 hours each. What is the labor rate variance for the month? (Negative numbers mean unfavorable. Use a minus sign for negative numbers).